Dental fountain-cuspidor



Patentd Oct. I8, I898.

N'u. 6l2,655.

W. N. AVERY.

DENTAL FOUNTAIN CUSPIDOR.

(Application filed July 1, 1897.)

2 Sheats-$heet I.

(No Model.

we NORRIS PEYERS ca, PHOTO-LITHO. WASHXNGTON. o, c,

w. N. AVERY.

DENTAL FOUNTAIN CUSPIDOR.

(Application filed July 1, 1897.)

No. 612,655. Patented out. I8, 1898.

(No Model.) 2 Sheets-Sheet 2.

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NITED STATES ATENT OFFICE.

WILLIAM N. AVERY, oF sAN JOSE, CALIFORNIA, ASSIGNOR TO THE s. s. WHITE DENTAL MANUFAeTuRINer COMPANY, OF PHILADELPHIA,

PENNSYLVANIA.

DENTAL FOUNTAIN-CUSPIDOR.

SPECIFICATION forming part Of Letters Patent No. 612,655, dated October 18, 1 898.

Application filed July 1, 1897. Serial No. 643,058. (No model.)

To aZZ whom it may concern.-

Be it known that I, WILLIAM N. AVERY, a citizen of the United States, residingat San J os, county of Santa Clara, State of California, have invented an Improvement in Dental Fountain-Cuspidors; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to a cuspidor which is especially designed for use in connection with dental chairs.

It consists in a novel construction and connection of the parts which go to make up such an apparatus and in details of construction, which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a horizontal section through the trays on line z of Fig. 2. Fig. 2 is a vertical section through the cuspidor on line 00 w of Fig. 1. Fig. 3 is a similar section on line 1 y of Fig. 1. Fig. 4 is adetail of the salivaejector.

In the construction of my cuspidor I have shown a bowl A, which may be made of brass, porcelain, china, or any other suitable or desirable material. This bowl has a cylindrical flange of metal B fixed to its lower inclined surface, and this flange is adapted to fit with sufficient accuracy within the cylindrical vertical walls of the trap 0. lower end of the bowl has an opening of sumcient diameter to serve as a discharge and to admit the water-pipe D, which passes vertically up into it and has fitted upon the upper end an adjusting-cap d. This cap is of such construction that it may be screwed up or down upon the upwardly-projecting end of the pipe D, and this end may be closed or opened, the screw-threads between it and the cap formin g a sufiiciently tight joint for practical purposes if not closed. Below the cap, fitted around the exterior of the pipe D, is a disk E, and through the sides of the pipe D are escape-holes 6. These escape-holes open outwardly around the pipe and in such position as to discharge into the lower part of the cap d, the water passing below the lower edge of the cap and being deflected outwardly between the cap and the disk.

The curvature The apex at the of the disk E is such that the water is thrown out therefrom in a thin sheet, striking the turned rim of the bowl, passing up so as to form a thin sheet all over the surface up to the point of the inward curvature at the top of the bowl, where the outward flow of the jet is checked, and the water returns, iiowing downthe conical inner surface of the bowl and is discharged downwardly through the opening at the apex into the trap. By adjusting the cap d up or down the direction and strength of the sheet of water discharged from the disk are easily regulated.

The supply of water is controlled by a faucet F, of any usual or suitable construction, conveniently situated with relation to the bowl and trap, so that, as shown in the present case, thepassage enters through the side of the trap and then turns upwardly, as previously described, to enter the bottom of the bowl.

Directly beneath the discharge-opening in the bowl is the litter-trap G, which consists of a shallow cup with perforated sides, into which the water and any gold or litter of any description which mayfall or be thrown into the bowl will drop and be arrested, while the water or liquid will be allowed to pass through and find its way into the discharge-passage II. This litter-trap has a downwardly-projecting cylindrical flange, by which it is readily connected with the discharge-passage by fitting into the tubular upper end, or when the same device is employed as a gas-trap it is fixed upon the removable bellI of said trap. When used as a gas-trap, I have shown a short cylindrical tube h, which fits into the upper part of the tube 11, and it may have a tight joint made by a rubber or other washer fitting snugly around it, as shown at J.

When the device is not used as a gas-trap, I have shown a coiled tubular spring, as at K, which extends between the cup G and the removable tube h, and this has sufficient space between the coils to'allow the water to pass, while checking any litter of any description. when the device is used in conjunction with the trap I, the tube It extends far enough up into the bell I to hold abody of water below its upper end and within the outer part C of the trap, which will prevent the return of any gas through the pipe II if the latter connects with the sewer. The same spiral arrangement of water-passage K may be used at the bottom of the cap I, if desired; but

any amalgam or gold falling into the trap would necessarily be retained by the upward projection of the tube h.

It will be seen by the construction thus far described that the bowl A can be readily lifted from the trap 0, thus exposing the whole interior for cleansing. The cup G in the same manner can be removed from the discharge-passage, and, if desirable or necessary, the short tube (L is in the same manner removable from the discharge-pipe H, thus leaving the whole interior parts in separate pieces, where they can be easily cleansed or inspected.

The next feature of my invention relates to the saliva-ejector, (shown at L.) This is fixed beneath the detachable bowl A, which projects over and hides it from View, but is in no way connected with it, so that the bowl can be removed, as previously described.

The saliva-ejector discharges directly into the trap at a point beneath the bowl, and it has a threaded opening into which screws the tube which carries the saliva, and when this tube is removed access may be had to the interior. The pipe which brings the water which forms the draft and ejector opens into the lower part of the chamber into which the saliva-tube is fitted, and this pipe has a screw 8 fitting into it and adjustable, so as to in- .crease or diminish the flow of water. The water being discharged into the pipe which leads into the trap forms a draft or suction and discharge in the manner of the well-known ejector principle, and this serves as a pump or suction to withdraw the saliva and discharge it into the trap, from which it escapes without passing into the bowl. The hole through which the water is discharged being very small, it is liable to become clogged by matter which is float-in in the water and may be lodged in this hole. By disengaging the saliva-pipe easy access is had to the interior for the purpose of inspection, cleansing, or repairs.

In order to supply water for rinsing the mouth or drinking purposes, I have shown a cup-holder M, having an opening or passage N in the bottom. This holder serves to contain a drinking glass or cup of any description, and the passage in the bottom allows the escape of any water which may overflow or be spilled. bracket-arm O to the upwardly-extending discharge-pipe P,which is bent at the top, so that it discharges directly into the glass, and a suitable faucet Q controls the discharge of water. The bracket 0, by which the cupholder is connected, is slidable and turnable upon the stem P and may be removed at will. The faucets Q and F,respectively, for controlling the drinking-water, the water for This cup-holder is fitted by a washing the bowl, and that for the salivaejector are connected with a coupling (shown at R) with a double cross and a connection for the hose, (shown at r,) by which the supply of water is brought to all these parts. These parts may all be made fast to the trap by means of set-nuts, thus leaving the bowl free to be removed, as before described.

In order to connect the device with the chair, I have shown a double bracket consisting first of the U shaped arm S, having at one end a shank which passes through a hole bored in the frame of the dental chair, and is secured thereto by any well-known means. The opposite end of the U-shaped arm S, standing in an approximately vertical position, is adapted to receive a socket formed at one end of the arm T. This socket has a setscrew U, by which the parts are locked together. The point of this screw enters an annular groove or channel a and controls the friction of the joint between the two, so that the parts will not move too freely upon each other. The outer end of the arm T has a socket V, through which the discharge-tube II'of the cuspidor passes, and this is adjustable up or down within the socket V, being held at any desired position by a set-screw \V. The lower end of the tube II may be connected by a flexible tube (not here shown) with a discharge at any suitable or desired point. The lower end of the tube H is at a sufficient distance above the floor to allow as much slack in the flexible discharge-tube as will allow a free motion of the dental chair within desirable limits from the passage through the floor through which it connects with the sewer or other discharge. I

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. A dental cuspidor comprising a trap with an open top, a bowl fitting said open top and adapted to be readily lifted therefrom, said bowl having a central opening, a perforated water-pipe extending upwardly through said opening and having a deflector discharging upwardly at an angle, and a screw-cap fitting the upper end of the pipe and adjustable toward and from the deflector to regulate the sheet of Water ejected from the pipe against the deflector.

2. In a dental cuspidor, a trap supported with relation to the chair, a-bowl removably connected with the upper part of the trap having a water-supply by which it is continually washed and cleansed, a litter-trap situated below the discharge-opening of the bowl, a discharge-pipe opening from the bottom of the trap having an opening through which liquid may escape from the trap into the pipe.

- 3. In a dental cuspidor, a trap fixed with relation to the chair, a bowl removably con nected with the upper end of the trap, a combined litter and gas trap adapted to arrest any litter from the bowl falling into it, a discharge-tube from the lower part of the trap, a removable tube extending from said tube upwardly into the trap, and an inverted cup sewer-gas.

4. In a dental cuspidor, a trap fixed with relation to a chair, a bowl detachably seated upon the upper part of a trap, having a central discharge thereinto, a saliva-ejector connected with the side of the trap below the periphery of the bowl discharging directly into the trap, and a water-supply tube connecting therewith and acting as a pump or ejector therefor.

5. In a dental cuspidor, a trap fixed with relation to the chair, a receiving-bowl connected with the upper part of the trap, a discharge-pipe with suitable litter and gas trap connected with the lower part of the trap, a saliva-pipe leading through the side of the trap and discharging downwardly in the interior thereof, a water-pipe connecting with the chamber into which the saliva is discharged having an injector-opening through which the water is delivered to produce the suction or draft from the saliva-pipe, and a regulating-screw by which the amount and force of the water-jet are regulated.

6. In a dental cuspidor, a trap having a bowl 'detachably seated upon the upper part and an upwardly-discharging washing device, a gas and litter trap situated in the lower part of the main exterior trap, a discharge-passage extending centrally downward from the trap and a double-jointed bracket through the outer end of which the discharge-pipe passes vertically, a set-screw bywhich the apparatus may be raised or depressed and locked in position, and a flexible connecting-tube through which the final discharge takes place.

'7. In a dental cuspiclor, a bowl with gas and litter traps, with saliva-ejector connecting with said traps, a discharge-pipe extending. downwardly from the main trap with a flexible connection leading from its lower end to the final discharge, a bracket consisting of two arms jointed together with a frictional setscrew to regulate the movement of the joint, the outer end of the outer arm having a vertical passage therethrough in which the discharge-pipe of the apparatus is vertically slidable, and a set-screw by which it may be locked at any desired point, the inner arm of said bracket being connected with the chair.

8. The combination, in a fountain-spittoon of the tubular upright support, the spitt0on bowl having detachable supporting connection with the top of said support, and the water-sprayer for supplying the bowl with water and having supporting connection with said support at a point below and outside of the spittoon-bowl and independent of said bowl, whereby the spittoon-bowl may be detached from the upright support without disturbing the water-sprayer.

In witness whereof I have hereunto set my hand.

\VILLIAM N. AVERY.

Witnesses:

S. H. NOURSE, JEssIn' C. BRODIE. 

